Relay device

A relay device for, in an integrated circuit including decentralized buses, connecting the plurality of buses, the relay device comprising:

• a switch for switching a combination of an input for receiving traffic data and an output for sending the traffic data;
• a congestion information processing section for obtaining congestion information indicating a degree of congestion of each of a plurality of traffics from an adjacent relay device which handles the plurality of traffics commonly with the relay device, and congestion information of each traffic in the relay device;
• a congestion information comparison section for finding information on a congestion level which quantitatively indicates difficulty of flowing of each traffic on a transmission route based on the congestion information obtained from the adjacent relay device and the congestion information of the relay device;
• a transmission scheduling adjustment section for, where the congestion level of each traffic is a congestion level of an input buffer accumulating traffic data of the traffic, determining a value of weight of an output buffer accumulating the traffic data in accordance with the congestion level of the input buffer and assigning a transmission band of the bus for each traffic in accordance with the determined value of weight to adjust transmission scheduling;
• and
• a switch allocation section for shifting the switch based on a result of the assignment of the transmission band of the bus.